flatness
41Surface plate — A surface plate is a solid, flat plate used as the main horizontal reference plane for precision inspection, marking out (layout), and tooling setup. The surface plate is often used as the baseline for all measurements to the workpiece, therefore …
42Geometric dimensioning and tolerancing — (GD T) is a system for defining and communicating engineering tolerances. It uses a symbolic language on engineering drawings and computer generated three dimensional solid models for explicitly describing nominal geometry and its allowable… …
43Flat module — In abstract algebra, a flat module over a ring R is an R module M such that taking the tensor product over R with M preserves exact sequences.Vector spaces over a field are flat modules. Free modules, or more generally projective modules, are… …
44Dipstick — A schematic diagram of an average diagnostic dipstick A dipstick is one of several measurement devices. Some dipsticks are dipped into a liquid to perform a chemical test or to provide a measure of quantity of the liquid. In the late 20th century …
45Primary form — is used in surface metrology to refer to the over all shape of a surface which can be measured quantitatively, as contrasted with more local or higher spatial frequency variations in the surface dimensions such as surface waviness or surface… …
46Gömböc — Gomboc redirects here. For the Slovene astrophysicist, see Andreja Gomboc. The mono monostatic gömböc in the stable equilibrium position A gömböc (pronounced [ˈɡømbøts] in Hungarian, sometimes spelled gomboc and pronounced GOM bock in English) is …
47steel — steellike, adj. /steel/, n. 1. any of various modified forms of iron, artificially produced, having a carbon content less than that of pig iron and more than that of wrought iron, and having qualities of hardness, elasticity, and strength varying …
48flat — [[t]flæ̱t[/t]] ♦♦ flats, flatter, flattest 1) N COUNT: also N num A flat is a set of rooms for living in, usually on one floor and part of a larger building. A flat usually includes a kitchen and bathroom. [mainly BRIT] Sara lives with her… …
49GEOGRAPHICAL SURVEY — Names The name Ereẓ Israel (the Land of Israel) designates the land which, according to the Bible was promised as an inheritance to the Israelite tribes. In the course of time it came to be regarded first by the Jews and then also by the… …
50Clement Greenberg — Birth name Clement Greenberg Born January 16, 1909(1909 01 16) New York City, New York, United States …
